Talk:1201: Integration by Parts

Explain xkcd: It's 'cause you're dumb.
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I think the joke is that's not the full explanation. -- 04:30, 19 April 2013 (UTC)

Not the full explanation?But what exactly is the joke here?It takes a lot of practice to be able to do integration sums correctly.Guru-45 (talk) 05:26, 19 April 2013 (UTC)

I think the joke is rather “which definitely looks easier” — that’s how mathematics is generally perceived by non-mathematicians: You rewrite something, state that it looks easier / more beautiful / more elegant — which the non-mathematician usually perceives differently — and even if it does, you’re not a tad nearer to the answer. -- 08:00, 19 April 2013 (UTC)

Symbolic integration ALWAYS require experience and trial-and-error, which is flustrating given that the reverse process - derivation - can be described with simple alghorithm and done mechanically. I heart that derivation is easy as geting toothpaste out of tube and integration is reverse process ... meaning its as hard as puting the toothpaste back into tube. The reason is that there is simple rule for derivation of product, whereas integration of product is usually done by GUESSING the product which will derivate into given integral (which is what integration by parts actually is, only reformulated to sound little easier). -- Hkmaly (talk) 09:18, 19 April 2013 (UTC)

By using the term derivation, you mean it as the same as the term differentiation, correct? I've never used the term derivation before. I like it, it's shorter. If so, YES, integration of products is WAY harder. 'u' substitutions alone are a pain - having a 'v' substitution as well requires a lot of hard work and trial and error...

Oh, and add a '+C' or you'll get yelled at. Best part. This is something I experienced many times in my first semester of mathematics for scientists. The joke seems to me to be the presentation of the idea accurately; after the initial step, there's no real advice to give. Good luck is the best you can hope for. 12:37, 19 April 2013 (UTC)